Car-door-controlling device



May 3,1927. 1,626,672

C.C.FABMER CAR DOOR CONTROLLING DEVICE Filed Mar'ch 24. 1922 ENTRANCE 000R ew'a/lv:

CL OSING MA GNET MAGNET EXIT DOOR ENG/NE.

INVENTOR own; C.FARMER ATTORNEY j a UTLT=LE star Patented May 3, 1927.

CLYDE c. FARMEB, or rrrrsnnne'n, 'rnnnsytvnmmnssienon are. THE wns'rllienonsn AIR BRAKEGOMPANY, on WILMERDING, PENNSYLVANIA, A conroRA'rIoN or PENNSYLVANIA.

CAR-DOORCONTROLLING DEVICE.

Application filed-M'arch 24, 1922. Serial Ive-146,527;

This invention relates to car door controlling devices for controlling the'car doors ofpassenger carsand more particularly of the electric traction type;

One object of my invention is to provide means wherebyany one or more of a plurality oi? car doors may be operated by the manipulation of the same operatingmember.

. Another object of my invention is to proride-means for electrically controlling-theoperation of car doors. v

Other objects and advantages will appear in the following more detailed: description: I of the-inventione V Intheaceompanying drawing; Fig. 1 is av diagrammatic View" of a car door controlling equipment embodying my. invention; and

Fig. 2a viewof a-n1odified form of the door controlling switch. v 7

As shown. in the Cll'fiWlIlg,Yth6* car door controlling; equipment may comprise car-- doortengines- 1 and2, the door engine 1 for controlling one car door, such as theyexit .door and the'other door engine 2; another door, such as: the entrance'door,

On cars equipped with two or moredoors- .suchas entrance and exitdoors, it may be -at, one time according; to the servicecondi tions or at another time it may be desired to:

Y piston, and is adapted to be operated byunder pressure to and fronrthe door opening plston Ziand the magnet 7 belng adapted tooperate double heat valves'lO andillifor condesired to open only one'on the fothen door operate both doors simultaneously. 1

Eachidoor engine may comprise acasing having piston chambers containing pistons 3 and-4: connected by a piston stem,5 the move- Inentof whichis-adapted to control'the opening and closing'of a car. door inthe usual manner. The plston 3.11s the door-opening fluid under pressure tomove the piston stem 5 inthe dlIeCtlOll for opening the car door,

' while the piston 4 is the door closing piston,

adapted to be operatedby fluid under pressure for. moving the piston stem 5inthe .direoti'onvto close the car door.

Forcontrolling the admission and release of fluid under pressure vtovand fromi the pistons. 3..and e, electro-ma'gnets Band 7 are provided, the elect-ro magnet 6 beingadapted to operate double beat valves 8 and 9 for controlling-the admissiontand release of fluid trolling the admission and release of fluid ing contact segments 14;: and 15 andicoaine cb ed contact segments 16; and 17..

The motormans brake valve mayhavle the usualoperating. positions of release; lap,'

service,-andemergency and the contact-drum 12: may he adapted'to socontrol'thecar door operating magnetsthat: in release, lap, and service positions, thecar doors willbe closed,

In: Operation, if it" isdesiied to open. and

close botlrthe exit".v and; entrance doors: si-

multaneously, the contact drum 13 is turned to the both doorsposition,asshownin Fig. 1-. ilith the selector, drum: in theabove posit1on if: it is desired to apply the brakes and open the car doorsflhe-brake valve and the contact drum 12, are turned to the'position shown inFig-lyin which the contact finger 19 connected to'current supply wire 20, engages contact segment 18, Fwhile the contact finger 21 also engages said segment. vElec trio current then. flows through; fingerBl,

wire 22. and-contact finger 23 to thecontact" segment 150tthe selector'drum. Inthis position ofthe selector drum, the contact fingers 24 and 25ralsoengage-the segment 15 so that current flows through wire-26 to=energize the magnet 6- andthrough wire 2'2" to energize the magnet 6 The energization' of magnet 6 causes the movement of the double beat valve .Stoits seat and the. *alve 9' to its while in another service or brake applied position, the doors wlllbe opened.

open position inwhich fluid under pressure is supplied from: the supplypipe28, which is preferably connected to the-emergency brake pipe for; a reason which will hereinafterlbe explained, to piston 3. so that the; piston 3 operates the piston stem 5 to, effect the opening of the exit cal door. In thesame manner, the energization of. magnet 6 operates to vreflect thesupply of fluid undeu pressure to the door opening'pistonof the entrance door engine so asto cause-theopeningof the entrance car door.

, The circuit wire 29 of magnet 7 and circuit wire of magnet 7 are connected through the respective contact fingers 31 and 32 with contact segment 14 of the selector drum, but since the circuit of the current supply wire 33, which is connected to the seg ment 14 through finger 34, is open at the drum 12, the door closing magnets '7 and 7 will be deenergized and consequently the double beat valve 11 of each magnet will. be closed while the valve 10 will be open, so that the door closing piston 4 will be connected to the exhaust.

. If the brake valve and the contact drum 12 are moved to any of the door'closed positions shown, the circuit through the contact finger 21 will-be opened, while the contact finger, will be connected through segment 18 with contact finger 19. Electric current will then flow through the wire 33 to segment 14 of the selector drum and thence through'the' wires 29 and 30 to energize the door closing magnets 7 and 7 The double beat valves 10 and 11 are then operated so the door closing piston 4 ofcach door engine,

' so that both the exit and the entrance doors iii) are closed. Since there is no current flowing through the wire 22 to the segment 15, the

door opening magnets 6 and 6 will be deenergized and "the corresponding doublebeat valves 8 and 9 operated to connect the pistons 3 to the atmosphere. f

If the conditions are such that it is desired to operate only the exit door, the selector drum 13 is turned to the exit, door position' In this position, the door closing magnet 7 of the entrance door engine 2 is constantly energized independently of the position of the door switch 12, since current flows from the supply wire through wire 36 and finger 37 tosegment 16 and thence through finger 32 and wire 30 to magnet 7 The magnet 6 of the entrance door engine 2- remains constantly deenergized, since the finger 25 is out of contact with the segment and. as fluid under pressure is supplied to the door closing piston of the entrance door engine by the energization of magnet '7, the entrance door will be held in the closed position.

The same connections, however, are maintained with respect to the magnets of the exit door engine as were made in the both door control position, the wire 33 being still connected to wire 29 through finger 34, contact segment 14 and finger 31, while wire 22 is connected to wire 26 through finger 23,

segment 15 and finger 24.

It .will therefore be clear that upon menipulation of the door switch drum 12 the exit door will be operated as in the case of the two door operation hereinbefore described.

, If it is desired to operate the entrance door only, the selector drum 13 is turned to the entrance door position in which the door closing magnet 7 is inaintaii'ied energized by the flow of current through vwire 86, finger 37, contact 16, through the connecting portion to the segment 17 and through finger 31 to wire 29. The door opening magnet 6 is maintained deenergized since the contact finger 24, connected with wire 26, is not connected to a contact segment.

The magnet 7 being energized. the double beat valves 10 and 11 are positioned so as to supply fluid under pressure to piston 4 and thus operate the door exit'door closed.

The electrical connections of the magnets 6 and 7 are the same as those made in the engine to hold the I two door position hereinbefore' described, so

that the entrance door may be opened and closed by the manipulation of the door drum 12, as will be evident, while the exitcdoor remains closed. V

lVhen the motormans brake valve is turned to emergency position, to effect an emergency application of the brakes, the pressure in the emergency brake pipe is reduced to atmospheric pressure and since the supply pipe 28-is chargedrfrom the emergency brake pipe, fluid pressure acting on any of the door operating pistons of either door engine will be reduced to atmospheric pressure, so that the fluid on all the door control pistons being at atmospheric pressure, the pressures will be balanced, permitting the doors to beopened or closed by hand. 1

Instead of providing a contact drum associated with the brake valve device as above described, a separate switch device may be employed, such as the double throw knife switch 88, as shown in Fig. 2. This switch is connected so that in one position the wire 33 through which current is supplied for energizing the door closingmagnets is connected to the current supply main 20, while in another position the wire 22v for supplying current to energize the door opening magnets is connected to the supply wire'QO.

Having now described-my invention, what I claim as new and desire to secure by Letters Patent, is v 1. In a cardoor controlling mechanism, the combination with two door engines for controlling separate car doors, electric means for operating said door engines to effect the opening and closing of the car doors, and a controlling switch device for controlling the electric circuitscfor operating said electric means, of a selector switch having a position for completing the circuit through which one door engine is controlled by said controlling switch while'the other door engine is operated to hold the corresponding door closed.

Gil

between the controlling switch and either but not both of said electrically operated devices and another position for establishing the electric circuits to both of said electrically controlled devices. 7 a

3. In a car door controlling mechanism, the combination with electrically operated devices for controlling the opening and closing of two car door-sand a control switch for controlling the electric circuits of said devices, of a selector switch having posit-ions for establishing the electric circuits between the controlling switch and either but not both of said electrically operated devices and at the same time establishing a local circuit for efiiecting the operation'of the other electrically operated device to hold the corresponding door closed. 7

4t. In a car door controlling mechanism, the combination with electrically operated devices for controlling the opening and closing of two car doors and a control switch for controlling the electric circuits of sald tions for establishing the electriccircuits between the controllinv switch and either but not both of said electrically operated devices and at the same time establishing a local. circuit for effecting the operation of the other electrically operated device to hold the corresponding door closed, and a position in which both electrically operated devices may be simultaneously controlled by manipulation of the control switch.

30 devices, of a selector switch having posi- In testimony whereof I have, hereunto set 7 my hand.

CLYDE o. FARMER. I 

